Home / 81,840.60-112,901.88-53,158.32

Finding the Fourth Proportional to 81,840.60, 112,901.88 and 53,158.32

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Solution

The fourth proportional to 81,840.60, 112,901.88 and 53,158.32 is: 73,333.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,840.60 : 112,901.88 = 53,158.32 : x
  2. Step 2: Convert to fraction form
    81,840.60/112,901.88 = 53,158.32/x
  3. Step 3: Cross multiply
    81,840.60x = 112,901.88 × 53,158.32
  4. Step 4: Simplify right side
    81,840.60x = 6,001,674,265.64
  5. Step 5: Solve for x
    x = 6,001,674,265.64/81,840.60
  6. Step 6: Final answer
    x = 73,333.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.